### `authentication`

<ExpansionPanel title="authentication YAML snippet">

```yaml title="authentication"
authentication:
  connector:
    sources: {}
  router:
    jwt:
      header_name: authorization
      header_value_prefix: Bearer
      ignore_other_prefixes: false
      jwks:
      - algorithms: null
        headers:
        - name: example_name
          value: example_value
        issuer: example_issuer
        poll_interval:
          nanos: 0
          secs: 60
        url: http://service.example.com/url
      on_error: Continue
      sources:
      - name: authorization
        type: header
        value_prefix: Bearer
  subgraph:
    all:
      aws_sig_v4:
        hardcoded:
          access_key_id: example_access_key_id
          assume_role:
            external_id: example_external_id
            role_arn: example_role_arn
            session_name: example_session_name
          region: example_region
          secret_access_key: example_secret_access_key
          service_name: example_service_name
    subgraphs: {}
```

</ExpansionPanel>
